Looking for some info. on an engine swap. history - 2002 sunfire with a 2.2 (none ecotech) and a 5 speed trans. Looking to put a new hart in her from a 2004 sunfire with a 2.2 ecotech and an auto trans. My question is, will my 5 spd. trans bolt up to the new engine or do I need to find a new trans as well. Any other tips or suggestions are appreciated. Thanks in advance.

Look in the 3rd gen section. The how to is there.